51000000005000 has 80 divisors (see below), whose sum is σ = 119505622959360. Its totient is φ = 20397845000000.

The previous prime is 51000000004997. The next prime is 51000000005021. The reversal of 51000000005000 is 50000000015.

51000000005000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47221025 + ... + 48288975.

It is an arithmetic number, because the mean of its divisors is an integer number (1493820286992).

Almost surely, 2^{51000000005000} is an apocalyptic number.

51000000005000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51000000005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59752811479680).

51000000005000 is an abundant number, since it is smaller than the sum of its proper divisors (68505622954360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51000000005000 is a wasteful number, since it uses less digits than its factorization.

51000000005000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077528 (or 1077509 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 11.

Adding to 51000000005000 its reverse (50000000015), we get a palindrome (51050000005015).

The spelling of 51000000005000 in words is "fifty-one trillion, five thousand".